• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 275 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV2700: PZT drive circuit

Annie Liu
Genius 10295 points
Part Number: DRV2700

Hi Team,

The customer chooses DRV2700 as the driver of PZT. The drive function can be realized, but it will bring interference, affect other indicators, and cannot meet the design requirements. He wants to use a general amplifier and a power amplifier to drive the PZT now. The MCU inputs the control signal (0~2.5V) to the general amplifier through the DAC to amplify the signal， and then input to the power amplifier. The power amplifier should output a voltage of 0~100V to drive PZT (PZT is a capacitive load). He would like to know how to achieve this?

Thanks,

Annie

  • 0
    TI__Mastermind 20685 points

    Hi Annie,

    I assume that the interference is coming from the switching frequency of the boost converter, has the customer characterized the frequency of this interference? In any case the customer will need to have 100V on their board in order to drive the piezo.

    Can the customer share more information on the interference they are experiencing? is it affecting the performance of the system or violating EMI requirements?

    Regards,

    Arthur